We don't have voting machines in Australia. You write on paper with a pencil (I believe you can bring a representative with you if you're vision impaired and things like that).
We definitely have voting machines [0] that started being trialed back in 2007, and more widely in recent years.
The process I experienced last time I voted in local elections was you validated where you lived and were given a one use barcode/qrcode (can't remember) which you scanned at the machine, made your selections and dropped the barcode paper in specific bins.